Overview

Features and Benefits

  • Optimized for 315MHz or 433MHz ISM Band
  • Operates from Single 3.3V or 5.0V Supplies
  • High Dynamic Range with On-Chip AGC
  • Selectable Image-Rejection Center Frequency
  • Selectable x64 or x32 fLO/fXTAL Ratio
  • Low 5.2mA Operating Supply Current
  • < 2.5µA Low-Current Power-Down Mode for Efficient Power Cycling
  • 250µs Startup Time
  • Built-In 50dB RF Image Rejection
  • Receive Sensitivity of -114dBm

Product Details

The MAX1473 fully integrated low-power CMOS superheterodyne receiver is ideal for receiving amplitude-shift-keyed (ASK) data in the 300MHz to 450MHz frequency range. Its signal range is from -114dBm to 0dBm. With few external components and a low-current power-down mode, it is ideal for cost- and power-sensitive applications typical in the automotive and consumer markets. The chip consists of a low-noise amplifier (LNA), a fully differential image-rejection mixer, an on-chip phase-locked-loop (PLL) with integrated voltage-controlled oscillator (VCO), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI), and analog baseband data-recovery circuitry. The MAX1473 also has a discrete one-step automatic gain control (AGC) that drops the LNA gain by 35dB when the RF input signal is greater than -57dBm.

The MAX1473 is available in 28-pin TSSOP and 32-pin thin QFN packages. Both versions are specified for the extended (-40°C to +85°C) temperature range.

Applications

  • Automotive Remote Keyless Entry (RKE)
  • Garage Door Openers
  • Home Automation
  • Local Telemetry Systems
  • Remote Controls
  • Security Systems
  • Wireless Sensors

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

Tools & Simulations

Design Tools

ISM-RF Baseband Calculator

ISM-RF Crystal Calculator workbook is a tool for properly selecting and configuring the reference oscillator for various industrial/scientific/medical radios.

Product Recommendations

MAX1473 Companion Parts

Recommended Related Parts

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.